Synthesis of DNA and the Development of Amylase and Phosphatase Activities in Cotyledons of Germinating Seeds ofVaccaria pyramidata

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Abstract
As in cotyledons of Agrostemma githago, synthesis of DNA takes place after germination in cotyledons of Vaccaria pyramidata and is followed by the formation of hydrolases, in particular, α-amylase and acid phosphatase. If DNA synthesis is inhibited by hydroxyurea, no, or only slight, enzyme activity develops. The possible role of this DNA synthesis is discussed.